<template>
  <div class="login-container">
    <el-form ref="loginForm" :model="loginForm" :rules="loginRules" class="login-form" auto-complete="on" label-position="left">

      <div class="title-container">
        <h3 v-if="isLogin" class="title">志愿活动网站登录</h3>
        <h3 v-if="!isLogin" class="title">注册成为志愿者</h3>
        <p v-if="!isLogin" style="color: white;">通过简单的几步，我们将为您注册账号...</p>
      </div>

      <el-form-item prop="username">
        <span class="svg-container">
          <svg-icon icon-class="user" />
        </span>
        <el-input
          ref="username"
          v-model="loginForm.username"
          placeholder="请输入用户名"
          name="username"
          type="text"
          tabindex="1"
          auto-complete="on"
        />
      </el-form-item>

      <el-form-item prop="password">
        <span class="svg-container">
          <svg-icon icon-class="password" />
        </span>
        <el-input
          :key="passwordType"
          ref="password"
          v-model="loginForm.password"
          :type="passwordType"
          placeholder="清输入密码"
          name="password"
          tabindex="2"
          auto-complete="on"
          @keyup.enter.native="handleLogin"
        />
        <span class="show-pwd" @click="showPwd">
          <svg-icon :icon-class="passwordType === 'password' ? 'eye' : 'eye-open'" />
        </span>
      </el-form-item>

      <el-button :loading="loading" type="primary" style="width:100%;margin-bottom:15px;" @click.native.prevent="handleLogin" v-if="isLogin">立即登录</el-button>
      <el-button :loading="loading" type="primary" style="width:100%;margin-bottom:15px;" @click.native.prevent="handleLogin" v-else>注册并登录</el-button>

      <div style="text-align: center;">
        <el-link v-if="isLogin" type="info" target="_blank" @click="regist">没有账号？立即注册</el-link>
        <el-link v-else type="info" target="_blank" @click="returnLogin">返回</el-link>
      </div>

    </el-form>
  </div>
</template>

<script>
import { validUsername } from '@/utils/validate'
import { ulogin, uregist } from '@/api/user'
import { setToken } from '@/utils/auth'
export default {
  name: 'Login',
  data() {

    //用户名校验规则
    const validateUsername = (rule, value, callback) => {
      if (!validUsername(value)) {
        callback(new Error('请输入正确的用户名'))
      } else {
        callback()
      }
    }

    //用户名校验规则
    const validatePassword = (rule, value, callback) => {
      if (value.length < 6) {
        callback(new Error('密码长度至少为6位'))
      } else {
        callback()
      }
    }

    //数据模型
    return {
      /** 测试用户 */
      loginForm: {
        username: '志愿者李四',
        password: '111111'
      },
      loginRules: {
        username: [
          { required: true, trigger: 'blur', validator: validateUsername },
          { min: 1, max: 14, message: '长度不超过 14 个字符', trigger: 'blur' },
          { pattern: /^[^ .,<>]*$/, message: '昵称中有违规字符，请换一个吧', trigger: 'blur' }
        ],
        password: [
          { required: true, trigger: 'blur', validator: validatePassword },
        ]
      },
      loading: false,
      passwordType: 'password',
      redirect: undefined,

      isLogin: true,
    }
  },

  methods: {
    //展示密码
    showPwd() {
      if (this.passwordType === 'password') {
        this.passwordType = ''
      } else {
        this.passwordType = 'password'
      }
      this.$nextTick(() => {
        this.$refs.password.focus()
      })
    },

    //登录方法
    handleLogin() {
      if (this.isLogin) { // 登录
        this.$refs.loginForm.validate(valid => {
          if (valid) {
            this.loading = true

            let dataForm = {
              nickName: this.loginForm.username,
              password: this.loginForm.password
            }

            //调用登录后端接口
            ulogin(dataForm).then((result) => {
              console.log(result)
              if (result.data.status == 200) {
                setToken(result.data.data.token);
                console.log('login success');
                this.$router.push('/');
              } else {
                this.$message.error(result.data.message);
                this.loading = false
              }
            });
          } else {
            console.log('error submit!!')
            return false
          }
        })
      } else { // 注册
        this.$refs.loginForm.validate(valid => {
          if (valid) {
            this.loading = true

            let dataForm = {
              nickName: this.loginForm.username,
              password: this.loginForm.password,
              gender: 0, // 用户还没有设置的默认值
              phone: '000' , // 用户还没有设置的默认值
              name: '000', // 用户还没有设置的默认值
            }

            //调用登录后端接口
            uregist(dataForm).then((result) => {
              console.log(result)
              if (result.data.status == 200) {
                this.$message.success(result.data.data);
                this.loading = false
                this.isLogin = true
              } else {
                this.$message.error(result.data.message);
                this.loading = false
              }
            });
          } else {
            console.log('error submit!!')
            return false
          }
        })
      }
    },

    /**
     * 注册方法
     *
     */
    regist() {
      if (this.isLogin) {
        this.isLogin = false
        this.loginForm.username = ''
        this.loginForm.password = ''
      }
    },

    returnLogin() {
      if (this.isLogin === false) {
        this.isLogin = true
      }
    }
  }
}
</script>

<style lang="scss">
/* 修复input 背景不协调 和光标变色 */
/* Detail see https://github.com/PanJiaChen/vue-element-admin/pull/927 */

$bg:#283443;
$light_gray:#fff;
$cursor: #fff;

@supports (-webkit-mask: none) and (not (cater-color: $cursor)) {
  .login-container .el-input input {
    color: $cursor;
  }
}

/* reset element-ui css */
.login-container {
  .el-input {
    display: inline-block;
    height: 47px;
    width: 85%;

    input {
      background: transparent;
      border: 0px;
      -webkit-appearance: none;
      border-radius: 0px;
      padding: 12px 5px 12px 15px;
      color: $light_gray;
      height: 47px;
      caret-color: $cursor;

      &:-webkit-autofill {
        box-shadow: 0 0 0px 1000px $bg inset !important;
        -webkit-text-fill-color: $cursor !important;
      }
    }
  }

  .el-form-item {
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(0, 0, 0, 0.1);
    border-radius: 5px;
    color: #454545;
  }
}
</style>

<style lang="scss" scoped>
$bg:#2d3a4b;
$dark_gray:#889aa4;
$light_gray:#eee;

.login-container {
  min-height: 100%;
  width: 100%;
  background-color: $bg;
  overflow: hidden;

  .login-form {
    position: relative;
    width: 520px;
    max-width: 100%;
    padding: 160px 35px 0;
    margin: 0 auto;
    overflow: hidden;
  }

  .tips {
    font-size: 14px;
    color: #fff;
    margin-bottom: 10px;

    span {
      &:first-of-type {
        margin-right: 16px;
      }
    }
  }

  .svg-container {
    padding: 6px 5px 6px 15px;
    color: $dark_gray;
    vertical-align: middle;
    width: 30px;
    display: inline-block;
  }

  .title-container {
    position: relative;

    .title {
      font-size: 26px;
      color: $light_gray;
      margin: 0px auto 40px auto;
      text-align: center;
      font-weight: bold;
      font-family: '楷体';
    }
  }

  .show-pwd {
    position: absolute;
    right: 10px;
    top: 7px;
    font-size: 16px;
    color: $dark_gray;
    cursor: pointer;
    user-select: none;
  }
}
</style>
